View Gappsi’s YouTube Channel to view Custom Vinyl Pool Liner for a Gunite Swimming Pool in Kings Park, NY
When an older swimming pool begins leaking, homeowners don’t always need to replace the entire pool. In many cases, a carefully planned renovation can restore the pool, address the underlying problems, and give the backyard a completely refreshed appearance. That was Gappsi’s approach for this recent gunite swimming pool renovation in Kings Park, NY, where a custom vinyl pool liner was installed to fit the unique shape and contours of the existing pool.
This project presented an interesting challenge because the original gunite pool shell had developed a leaking problem. Rather than replacing the entire swimming pool, Gappsi developed a custom solution using a heavy-duty vinyl liner specifically fabricated for the existing pool shape.
The finished project looked beautiful, giving the homeowners a renewed pool interior and a practical solution to the leaking shell.
Renovating a Leaking Gunite Pool
Gunite pools are known for their strength, durability, and ability to be constructed in virtually any shape. Because the concrete shell is built specifically for the property, gunite pools can incorporate unique curves, radii, steps, benches, varying depths, and other custom features. Gappsi regularly works with existing gunite pools as part of renovation and remodeling projects throughout Long Island. (Gappsi Group)
However, even a durable gunite pool can eventually develop problems. Cracks, deterioration, plumbing issues, water loss, or other structural concerns may require renovation.
In this Kings Park project, the existing gunite shell had a leak. The solution was to create a custom vinyl liner that could be installed within the existing pool structure.
Rather than treating the pool as a standard vinyl liner installation, this project required careful attention to the gunite pool’s existing shape.
A Custom Vinyl Liner Designed for the Pool
One of the most important aspects of this renovation was custom-cutting the liner to fit the existing pool shape.
A gunite swimming pool can have rounded areas and unique radius transitions that are different from the more standardized geometry commonly associated with some vinyl pool construction. That means measuring and fabricating a liner for an existing gunite pool requires precision.
For this Kings Park swimming pool, the liner was custom-manufactured to accommodate the radii and contours of the pool floor. The objective was to create a liner that followed the existing shape as closely as possible while providing a new waterproof interior surface.
Custom fabrication was especially important because this was not simply a matter of installing a standard-size liner. The existing pool had its own dimensions and curves, and the new liner needed to be produced specifically for those characteristics.
Gappsi has experience with custom vinyl pool installations and gunite-to-vinyl renovation projects, including projects where existing gunite structures are modified to accommodate custom liners. (Gappsi Group)
Heavy-Duty 40 Mil Vinyl Liner
For this renovation, Gappsi installed a particularly thick vinyl liner specified at approximately 40 mil.
Liner thickness is an important consideration when renovating a swimming pool. A thicker vinyl liner can provide greater durability and resistance to everyday wear than thinner materials. Gappsi’s pool renovation information also notes that thicker liners can offer greater durability and puncture resistance, although thicker material can be more challenging to install because of its rigidity. (Gappsi Group)
The heavy-duty material selected for this Kings Park project was intended to provide a long-lasting pool surface while also addressing the home’s existing pool leakage issue.
According to the project specifications, this liner carries a 35-year guarantee, giving the homeowners additional confidence in the long-term performance of their renovated pool surface. As with any manufacturer warranty or guarantee, review the specific terms and conditions with the pool contractor and liner manufacturer.

Why Consider a Vinyl Liner for a Gunite Pool?
Many homeowners assume that if a gunite pool develops a serious problem, the only option is to rebuild the pool. That is not necessarily the case.
Depending on the condition of the existing structure and the nature of the problem, a renovation may offer an alternative to a full pool replacement. A custom vinyl liner can transform the interior of an existing pool while potentially avoiding the extensive demolition and reconstruction associated with building an entirely new swimming pool.
This can be particularly valuable when the homeowner likes the existing size and layout of the pool but needs a solution for an aging or leaking interior.
Gappsi has previously completed gunite-to-vinyl conversions where remodeling the existing pool provided an alternative to completely replacing the structure. (Gappsi Group)
Every pool is different, however. Before deciding whether a custom liner renovation is appropriate, evaluate the condition of the existing shell, the pool shape, plumbing, coping, steps, surrounding patio, and other components.
Custom Pool Renovation in Kings Park, NY
One advantage of working with an experienced pool renovation contractor is the ability to develop a solution around the existing property rather than forcing the project into a standard design.
The Kings Park pool renovation is a good example.
The existing gunite pool had a unique shape and a leaking problem. Instead of abandoning the pool or automatically removing the entire structure, the renovation focused on creating a custom-fitted vinyl interior.
The liner was manufactured to accommodate the pool’s specific dimensions and the radii along the bottom. The heavy-duty vinyl material provided a fresh, attractive surface while giving the homeowners a practical way to continue enjoying their existing swimming pool.
The completed installation looked great and gave the pool a renewed appearance.
Extending the Life of an Existing Swimming Pool
A swimming pool is a significant investment in a home and backyard. When problems develop, homeowners should consider all available renovation options before deciding that complete replacement is necessary.
A professional evaluation can help determine whether the pool can be repaired, resurfaced, remodeled, converted, or renovated with a custom liner.
For some homeowners, a custom vinyl liner may be an excellent solution for an aging gunite pool, particularly when the existing pool shape and overall layout are worth preserving.
The right liner can also provide a comfortable, smooth swimming surface while offering homeowners numerous options for colors and patterns. Gappsi works with homeowners on vinyl liner pool renovations and other pool remodeling solutions throughout Nassau and Suffolk County. (Gappsi Group)
Gappsi’s Latest Gunite Pool Renovation in Kings Park
This custom vinyl pool liner installation in Kings Park, NY, demonstrates how an existing gunite swimming pool can be given new life through thoughtful renovation.
The leaking gunite pool was fitted with a custom-made, heavy-duty vinyl liner designed specifically around the pool’s unique shape and bottom radii. With approximately 40 mil thickness and a project-specified 35-year guarantee, the new liner provides a substantial upgrade to the pool interior.
Most importantly, the finished pool looks great and gives the homeowners a renewed swimming environment without requiring the entire pool to be replaced.
If your Long Island swimming pool is showing signs of age, losing water, or needs a new interior surface, a professional pool renovation may offer a practical alternative to a full replacement. Gappsi designs and renovates gunite, vinyl liner, and fiberglass swimming pools throughout Long Island, with custom solutions tailored to each property and homeowner. (Gappsi Group)
For homeowners considering a gunite pool renovation in Kings Park, NY, a custom vinyl liner may be worth exploring. The first step is to evaluate the existing pool and determine whether its structure can be successfully renovated to accommodate a new liner.
Gappsi can help homeowners explore their options and develop a pool renovation plan designed around the existing pool, property, and long-term goals.
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This comprehensive backyard project combined all the essential elements of luxury outdoor living. Every detail was thoughtfully designed and expertly built to provide years of enjoyment, from the pool, patio, water features, and outdoor kitchen. And it has done just that—fifteen years later, the homeowners are still enjoying every inch of their backyard paradise.
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This Nissequogue backyard is more than just a space—it’s a lifestyle. It’s where memories are made, holidays are celebrated, and quiet moments are cherished. Fifteen years later, the pool still sparkles, the patio still shines, and the water feature still flows. That’s the kind of lasting quality that Gappsi is proud to deliver.
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